BBS Route · Texas · BCR 21
Ola Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 96 species recorded across 53 survey years, still active.
96Species Recorded
53Years Surveyed
1967–2024Span
9Observers
Bird Species Found on Texas Ola
Top 40 of 96 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Cliff Swallow | Hirundinidae | 50 | 2024 | +400% | 1997 | |
| Black Vulture | Cathartidae | 29 | 2024 | +680% | 1989 | |
| Northern Cardinal | Cardinalidae | 27 | 2024 | -42% | 1969 | |
| Northern Mockingbird | Mimidae | 20 | 2024 | -62% | 1969 | |
| House Sparrow | Passeridae | 19 | 2024 | -76% | 1969 | |
| Mourning Dove | Columbidae | 17 | 2024 | -83% | 1969 | |
| American Crow | Corvidae | 14 | 2024 | -74% | 1969 | |
| Eastern Meadowlark | Icteridae | 10 | 2024 | -94% | 1969 | |
| Eurasian Collared-Dove | Columbidae | 10 | 2024 | +267% | 2006 | |
| European Starling | Sturnidae | 9 | 2024 | +173% | 1969 | |
| Carolina Chickadee | Paridae | 9 | 2024 | +100% | 1969 | |
| Scissor-tailed Flycatcher | Tyrannidae | 8 | 2024 | -87% | 1969 | |
| Barn Swallow | Hirundinidae | 8 | 2024 | -26% | 1970 | |
| Carolina Wren | Troglodytidae | 8 | 2024 | +92% | 1972 | |
| Turkey Vulture | Cathartidae | 7 | 2024 | +240% | 1970 | |
| Downy Woodpecker | Picidae | 7 | 2024 | +114% | 1973 | |
| Red-bellied Woodpecker | Picidae | 7 | 2024 | -42% | 1969 | |
| Painted Bunting | Cardinalidae | 7 | 2024 | +48% | 1969 | |
| Chimney Swift | Apodidae | 6 | 2022 | -77% | 1969 | |
| Blue Jay | Corvidae | 6 | 2024 | +64% | 1969 | |
| Western Cattle-Egret | Ardeidae | 5 | 2024 | +529% | 1970 | |
| Eastern Phoebe | Tyrannidae | 5 | 2024 | +33% | 1971 | |
| Grasshopper Sparrow | Passerellidae | 5 | 2014 | +150% | 1983 | |
| White-eyed Vireo | Vireonidae | 5 | 2024 | +60% | 1996 | |
| Great Crested Flycatcher | Tyrannidae | 4 | 2022 | -42% | 1969 | |
| Dickcissel | Cardinalidae | 4 | 2024 | -86% | 1969 | |
| Eastern Bluebird | Turdidae | 4 | 2024 | +10% | 1969 | |
| Little Blue Heron | Ardeidae | 3 | 2023 | -64% | 1969 | |
| Green Heron | Ardeidae | 3 | 2023 | -38% | 1970 | |
| Red-tailed Hawk | Accipitridae | 3 | 2024 | -14% | 1970 | |
| Crested Caracara | Falconidae | 3 | 2024 | +29% | 1999 | |
| Brown-headed Cowbird | Icteridae | 3 | 2023 | -84% | 1969 | |
| Great-tailed Grackle | Icteridae | 3 | 2022 | -45% | 1969 | |
| Killdeer | Charadriidae | 2 | 2024 | +0% | 1969 | |
| Rock Pigeon | Columbidae | 2 | 2021 | +122% | 1974 | |
| Common Nighthawk | Caprimulgidae | 2 | 2012 | -92% | 1969 | |
| Red-winged Blackbird | Icteridae | 2 | 2024 | -96% | 1969 | |
| Lark Sparrow | Passerellidae | 2 | 2024 | -91% | 1969 | |
| Bell's Vireo | Vireonidae | 2 | 1968 | -33% | 1967 | |
| Orchard Oriole | Icteridae | 2 | 2011 | +0% | 1970 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.